Trans-Matic has 120 different transfer presses ranging from 5-600 tons. This range enables us to match your part to an ideal press based on initial blank size, part length, number of stations required to deep draw the part, tonnage required, press speed (strokes per minute), machine energy and auxiliary equipment capability. Transfer presses enable greater length-to-diameter ratios and often utilize less material, making them more cost effective.
Trans-Matic offers deep drawn metal stampings utilizing state of the art deep drawing technology to maximize efficiency. We match each deep drawn component with the ideal manufacturing technology to give our customers the highest quality deep drawn parts at the lowest cost.
About Transfer Press Stamping
Transfer stamping presses are typically used to form metal components that have a cupped shape. A typical cup shaped part manufactured using a transfer press has a length to diameter ratio of 1:1 or greater. During the transfer press stamping process, coil sheet material is fed into a press and a blank is created where the material is cut from the coil strip. The blank is then pushed or transferred to the next station where the rough cup is created. Typical blank diameter to cup diameter reduction is 40%. The cup is then transferred by mechanical fingers to one or more subsequent draw stations where diameter reductions continue at an approximately 20% rate until the rough, final shape has been created. The part is then transferred into additional stations that are used to establish critical diameters and lengths, steps, features, and forms.
Additional stations may also be required for features such as Side Piercing, Bottom Piercing, Beading, Bulging, Coining, Curling, Extruding, Ironing / Wall Thinning, Necking, Notching, Rib Forming, Stamping / Marking, Threading, and Leak Testing. For more information on additional in-press stations, see the Deep Drawing Process.
Transfer Press vs Progressive Die Press
Transfer stamping presses compared to progressive die presses vary mostly by the creation of the blank (relieving the material from the coil strip). Progressive die presses are mainly used for stampings where the length to diameter ratio is low and part side features are not required.
Progressive die presses are normally best for bending, cutting and piercing. Due to the relieving of the material, transfer presses allow the material to flow between the punch and die and thus allow for greater length to diameter ratios. Transfer presses allow more flexibility to present the part to the tooling, making them better to accommodate some features. Finally transfer presses, in most cases, utilize less material than progressive die presses since a carry web is not required to produce the part.
Types of Transfer Presses
Transfer presses come in several forms from renowned press builders such as Aida, Chin Fong, Komatsu, Manzoni Minster, Osawa, Platarg, Seyi, US Baird, and many others.
There are two main types of transfer presses. ICOP “individually cam operated plunger presses” and solid bed “dieset” style presses. The motion of an ICOP style press is much the same as that of a gasoline engine. A rotating shaft with cam lobes drives the movement of each press station individually. Dieset style presses have a solid flat surface that creates the press motion activating all press stations at the same time.
Transfer presses come in various sizes with various capabilities. Matching the right press to the part being formed is critical. Press capability features that are important when determining the right press include blank size, part length, number of stations required, tonnage required, press speed (strokes per minute), machine energy, and auxiliary equipment capability. Trans-Matic has a wide range of capabilities that allow us to match the optimum press to your part.